Comments

6 comments

  • Michael_L

    No, that display is a Chip-On-Glass LCD, and contains no electronic components except for the controller IC bonded to the glass.

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  • andresmdn

    Appreciate it Michael. Any recommended values? Suppose I can grab a unit and calculate a sample forward voltage myself, but are there any standard values that work well, independent of manufacturing tolerances?

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  • Michael_L

    It really depends on how bright you want the backlight to be.  I'd say around 100Ω.

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  • JB

    Please can you confirm that being COG does not in itself imply that a display has no current limiting resistors for the backlight? I'm looking at NHD-C12864A1Z-FS(RGB)-FBW-HT1, and it appears to show some in the "Mechanical Drawing" LED circuit, but now I'm not quite sure. Thanks.

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  • Paul_B

    Hello,

    NHD-C12864A1Z-FS(RGB)-FBW-HT1 is a COG display, however the glass is attached to a pcb which contains current limiting resistors, please see page 3 in the displays datasheet.

    https://newhavendisplay.com/content/specs/NHD-C12864A1Z-FSRGB-FBW-HT1.pdf

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  • JB

    Thats good, thanks.

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